JPH06250886A - Remote supervisory method for computer system and remote computer managing system - Google Patents

Abstract

PURPOSE:To provide a remote computer managing system capable of reducing the load on a computer user and executing fault recovery operation also from a remote place. CONSTITUTION:When an instruction processor 111 executes a remote supervisory agent program 124 in a normal state of a computer system 100, communication is executed through an I/O processor 113, a communication control device 102 and a communication line 156 to monitor/operate the system 100 by a remote supervisory system 101, and when a fault is generated in the system 100, a maintenance device 114 executes a remote supervisory function program to execute communication through the processor 113, the device 102 and the line 156 and to monitor/operate the system 100 by the system 101. Communication can be executed also at the time of generating a fault by using the communication control device and the communication line to be used in normal work and monitor/operation from a remote place can be executed. Since it is unnecessary to newly add a device or laying a new line, a user is not charged with excess load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring method for a computer system and a remote computer management system. And a remote computer management system.

[0002]

2. Description of the Related Art In recent years, a configuration in which computer systems are distributed and deployed at remote locations has become widespread. However, when distributed and deployed in a remote place, it is necessary to arrange an operator for each computer system, but it is difficult to arrange the personnel who can handle it. Moreover, even if it is possible, it will lead to an increase in labor costs and complexity of operation. Therefore,
A remote computer management system for remotely monitoring / operating a computer system has been proposed.

In the conventional general remote computer management system, the function of the communication management subsystem operating on the computer system is used to communicate with the remote monitoring system to report the state of the computer system and receive operation requests. And so on,
Remotely monitor / operate the computer system. But,
If a failure occurs in the computer system, the software running on it will also be affected, and the communication management subsystem will not be able to operate, and communication with the remote monitoring system will be lost, and monitoring / operation from a remote location will be possible. Cannot be done.

On the other hand, for example, Japanese Patent Laid-Open No. 1-216645
In the publication, a branching device for branching an input / output signal between the system operation device and the operation control device on the computer system side is provided, and a modulation device such as a modem is added to the branching device to prevent a computer system failure. However, a remote computer management system capable of communicating with the remote monitoring system is disclosed. Further, for example, Japanese Patent Application Laid-Open No. 61-114346 discloses a remote computer management system provided with a message output device for notifying each of the terminals of users who are using the computer system that a failure has occurred in the computer system. Has been done.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the remote computer management system disclosed in Japanese Patent Publication No. 45-45, it is necessary to add a branching device and a modulating device, which causes a problem of imposing a burden on a computer user. In addition, JP-A-61-1
In the remote computer management system disclosed in Japanese Patent No. 114346, it is possible to notify the occurrence of a failure, but there is a problem that a failure recovery operation from a remote place cannot be performed. Therefore,
An object of the present invention is to provide a remote computer management system which is light on the computer user and which can also perform a failure recovery operation from a remote location.

[0006]

According to a first aspect, the present invention provides a computer system including an instruction processing device, an input / output processing device and a maintenance device, and a communication control device connected to the input / output processing device. In a remote computer management system comprising a remote monitoring system connected to the computer system via the communication control device and a communication line, when the computer system is normal, the remote processing agent program is executed by the command processing device. By executing the above, the communication between the computer system and the remote monitoring system is performed using the input / output processing device, the communication control device, and the communication line, and the computer system is remotely monitored by the remote monitoring system. When the system fails, the maintenance device executes the remote monitoring function program to Remote monitoring of a computer system, characterized in that communication is performed between the computer system and the remote monitoring system by using the force processing device, the communication control device and the communication line, and the computer system is remotely monitored by the remote monitoring system. Provide a way.

According to a first aspect of the present invention, in the remote monitoring method for a computer system having the above-mentioned structure, the maintenance device executes a remote monitoring function program to communicate with the remote monitoring system and operate from the remote monitoring system. A remote monitoring method for a computer system, characterized in that a maintenance function program is executed by a maintenance device in response to a request to recover from a failure.

In a third aspect, the present invention provides a computer system including an instruction processing device, a main storage device, an input / output processing device, a maintenance device, and a system control device for connecting the above respective devices, and the input / output processing device. In a remote computer management system comprising a communication control device connected to the computer and a remote monitoring system connected to the computer system via the communication control device and a communication line, the input / output processing from the communication control device is performed. The data input to the device is sent from the input / output processing device to the instruction processing device or the main storage device via the system control device, and the data output from the input / output processing device to the communication control device is controlled by the system control device. Transfer mode from the instruction processing device or the main storage device to the input / output processing device via a device, or The data input from the control device to the input / output processing device is sent from the input / output processing device to the maintenance device via a signal path that does not pass through the system control device, and is output from the input / output processing device to the communication control device. Data transfer mode switching means for switching to one of the transfer modes at the time of failure to send data from the maintenance device to the input / output processing device via a signal path that does not pass through the system control device, and when the computer system is normal, By being executed by the instruction processing device, communication is performed between the computer system and the remote monitoring system by using the input / output processing device, the communication control device, and the communication line, and the computer system is remotely controlled by the remote monitoring system. A remote monitoring agent program to be monitored and the maintenance device when a computer system fails. The remote control system performs remote communication of the computer system by the remote monitoring system by performing communication between the computer system and the remote monitoring system by using the input / output processing device, the communication control device, and the communication line. Provided is a remote computer management system comprising a monitoring function program.

According to a fourth aspect, the present invention provides a computer system including an instruction processing device, a main storage device, an input / output processing device, a maintenance device, and a system control device for connecting the respective devices, and the input / output processing device. In a remote computer management system comprising a communication control device connected to the computer and a remote monitoring system connected to the computer system via the communication control device and a communication line, the input / output processing from the communication control device is performed. The data input to the device is sent from the input / output processing device to the instruction processing device or the main storage device via the system control device, and the data output from the input / output processing device to the communication control device is controlled by the system control device. Transfer mode from the instruction processing device or the main storage device to the input / output processing device via a device, or The data input from the control device to the input / output processing device is sent from the input / output processing device to the maintenance device or the main storage device via the system control device and is output from the input / output processing device to the communication control device. Data transfer mode switching means for switching to one of the transfer modes at the time of failure to send data from the maintenance device or the main storage device to the input / output processing device through the system control device, and when the computer system is normal. By being executed by the instruction processing device, communication between the computer system and the remote monitoring system is performed using the input / output processing device, the communication control device, and the communication line, and the computer system is controlled by the remote monitoring system. A remote monitoring agent program for remote monitoring, and the above-mentioned maintenance when a computer system fails. By being executed by the device, communication between the computer system and the remote monitoring system is performed using the input / output processing device, the communication control device, and the communication line, and the computer system is remotely monitored by the remote monitoring system. Provided is a remote computer management system including a remote monitoring function program.

According to a fifth aspect of the present invention, in the remote computer management system having the above structure, the remote monitoring function program is held by the maintenance device when an operation request is issued from the remote monitoring system through communication with the remote monitoring system. Provided is a remote computer management system having a function of executing a maintenance function program.

[0011]

In the remote monitoring method and remote computer management system for a computer system according to the present invention, under normal conditions, the remote monitoring agent program running on the instruction processing device of the computer system communicates with the remote monitoring system to monitor from a remote location. / Operate. When the communication by the instruction processing device is disabled at the time of failure, the maintenance device of the computer system communicates with the remote monitoring system by the remote monitoring function program, and monitors / operates from a remote place. The maintenance device is
Because of its role, it is designed so that it can operate normally even in the event of most failures, which allows monitoring / operation from a remote location during failures. In this way, the maintenance device, communication control device, and communication line that are used in normal business are used even in the event of a failure, so there is no need to add a new device to the computer system, and a new line needs to be installed. It does not impose an extra burden on the user.

[0012]

【Example】

-First Embodiment- In the first embodiment, the maintenance device directly activates the input / output processing device via a signal path that does not pass through the system control device, controls the communication control device, and establishes a remote monitoring system. In this embodiment, communication is performed to realize monitoring / operation from a remote place.

FIG. 1 is an overall configuration diagram of a remote computer management system 1 according to a first embodiment of the present invention. The remote computer management system 1 monitors / operates the computer system 100 from a remote location by a remote monitoring system 101 via a communication control device 102.

The computer system 100 includes an instruction processing device 1
11, a main storage device 112, an input / output processing device 113, a maintenance device 114, and a system control device 115. The instruction processing device 111 is a part that actually executes various programs for the computer system 100 to function. The instruction processing device 111 executes an OS 116 that realizes the basic functions of the computer system 100, and on the OS 116, a communication management program 117 that controls communication with a remote place via a line is executed.
Further, a remote monitoring agent program 124 is operating to monitor / operate the computer system 100 from a remote location, and exchanges information with the remote monitoring system 101 by using the basic function of the communication management program 117. The main storage device 112 stores programs and data executed by the instruction processing device 111.

The input / output processor 113 is the instruction processor 1
11. Channels (CH) 119-0 to 119-7 for analyzing the input / output commands from 11 and controlling peripheral devices, and an input / output control circuit 118 for activating these channels 119-0 to 119-7 to perform input / output operations. It has and. The input / output processing device 113 performs an input / output operation with a peripheral device connected to the computer system 100 in response to a request from the instruction processing device 111, but the operation is executed asynchronously with the operation of the instruction processing device 111. The channel 119-5 is connected to the communication control device 102 via the channel cable 155.

The maintenance device 114 includes the device access circuit 12
0, a channel (CH) connection adapter 121, and a channel (CH) control adapter 122. The device access circuit 120 uses the channel connection adapter 121 and the channel cable 157 to connect the channel 119-
0 is connected to realize a dialogue with the OS 116. Also,
The device access circuit 120 includes a console display 1
26 and a keyboard 208 to realize an interface with the operator. For example, the operating status of the OS 116 is displayed on the console display 126. Further, the device access circuit 120 is connected to the input / output control circuit 113 via the channel control adapter 122 and the signal line 158, and can directly access the inside of the input / output processing device 113. The maintenance device 114 is the computer system 10
When the maintenance work of 0 is performed, the device access circuit 120 accesses the instruction processing device 111, the main storage device 112, the input / output processing device 113, and the system control device 115 to set the internal register of each device and operate. Set the environment. It also reads / writes data stored in the main storage device 112.

The system control unit 115 includes an access control circuit 123, an instruction processing unit 111, a main storage unit 1.
12, the input / output processing device 113 and the maintenance device 114 are connected by buses 151 to 154, respectively. The system control device 115 accesses the main storage device 112 from the instruction processing device 111 and the maintenance device 114 to each device 11.
It controls access to 1 to 113 and avoids access conflict.

The communication control device 102 is connected to the remote monitoring system 101 via a communication line 156. As a result, the computer system 100 has the communication control device 10
2 can communicate with the remote monitoring system 101.

In the remote monitoring system 101, the remote monitoring manager program 125 is operating, and the remote monitoring agent program 124 on the computer system 100 is in operation.
The computer system 100 is remotely monitored / operated in cooperation with.

However, if the OS 116 or the communication management program 117 goes down, or if a failure occurs in the instruction processing unit 111, the system control unit 115, etc., the remote monitoring agent program 124 cannot operate, so the above monitoring is performed. / Operation becomes impossible. In this case, the computer management system 1 uses the maintenance device 114 to communicate with the remote monitoring system 101 to realize monitoring / operation from a remote location.

Since the maintenance device 114 is intended for the maintenance function, the command processing device 111 and the system control device 11 are used.
Compared with a device used for normal processing such as No. 5, the frequency of use is low, and the possibility of failure is extremely low. Further, the possibility of double failure in which other devices and the maintenance device 114 simultaneously fail is further reduced. Furthermore, since each device can operate asynchronously, it is not affected by the failure of other devices. Therefore, even when the computer system 100 cannot perform a normal function, the maintenance device 114 can normally operate by itself and can communicate with the remote monitoring system 101. Specifically, the maintenance device 114
The communication line 158 is used to directly access the input / output control circuit 118, activate the channel 119-5, and communicate with the remote monitoring system 101 via the communication control device 102.

FIG. 2 shows the internal structure of the maintenance device 114. The device access circuit 120 includes a CPU 200, a system access circuit 201, a memory 202, a channel (C
H) A control circuit 203, an input / output control circuit 204, a console control circuit 207, and a bus 250 are provided.

The channel control circuit 203 uses the signal line 251.
Instructing the channel control adapter 122 by
The channel control adapter 122 is connected via a signal line 158,
An access request is issued to the input / output control circuit 118. When the confirmation signal for the instruction returns to the channel control circuit 203 via the signal line 251, the channel control circuit 203 can directly access the internal register of the input / output control circuit 118.

The OS 116 of the input / output control circuit 204 is O
Channel 11 set for output of S message
The OS message from 9-0 is received via the channel connection adapter 121 and the signal line 252. In addition, a command input by the operator via the keyboard 208 is input to the OS 116 via the signal line 252 and the channel connection adapter 121.

The memory 202 has a computer system 100.
Maintenance function program 209 that describes the procedure for realizing the maintenance function of the above, and console function program 210 that describes the procedure for controlling the output of OS messages from the OS 116 to the console display 126 and the control of inputting commands from the keyboard 208. It is stored. A screen buffer 213 is secured as a message storage area when the console function program 210 displays a message or the like on the console display 126. Further, the memory 202 includes the remote monitoring system 1
A remote monitoring function program 205 for communicating with 01 to realize remote monitoring is stored. The remote monitoring function program 205 includes a transmission processing unit 211 and a reception processing unit 212 that describe a procedure for controlling the channel 119 to transmit and receive data, and a channel (CH) control unit 206 that controls the channel 119 and performs an input / output operation. Includes and.

When the computer system 100 is operating normally, the maintenance device 114 executes the console function program 210 by the CPU 200 to realize the interactive function between the OS 116 and the operator. That is, the OS message sent from the channel 119-0 via the channel cable 157 is the channel connection adapter 121.
And the input / output control circuit 204 via the signal line 252 and the console control circuit 208 via the bus 250.
And is displayed on the console display 126 under the control of the console function program 210. The operator looks at the displayed OS message and inputs a command from the keyboard 208 as necessary. The input command is sent to the OS 116 by a route reverse to the above.

When performing maintenance work using the maintenance device 114, when the operator inputs a command from the keyboard 208, the console function program 210 calls and starts the maintenance function program 209. That is, when the operator inputs a command from the keyboard 208 while looking at the console display 126, the console control circuit 2 is controlled under the control of the console function program 210.
A command is input from 07, and an operation is designated for the system access circuit 201 via the bus 250.
The system access circuit 201 performs setting and reading of internal registers of each device via the bus 154 and the system control device 115.

Now, for example, when a failure occurs in the instruction processing unit 111, a machine check interrupt occurs and the bus 1
The occurrence of a failure is reported to the maintenance device 114 via 54. This is recognized by the system access circuit 201, and the CP
The U 200 executes the remote management function program 205 stored in the memory 202. The remote management function program 205 notifies the remote monitoring system 101 of the system status of the computer system 100. Also,
An operation request from the remote monitoring system 101 is received.
The system state notification / operation request is received by the transmission processing unit 211, the reception processing unit 212, and the channel control unit 20.
This is realized by directly controlling the communication control circuit 102 by means of 6.

FIG. 3 shows the internal structure of the input / output processing circuit 113. The input / output control circuit 118 includes the gates 300 and 30.
1, an arbitration circuit 302, and an input / output request processing circuit 303
A channel address storage register 305 and a device address storage register 306.

Gates 300 and 301 are for prohibiting / permitting access from the maintenance device 114 and the system control device 115, respectively. When the access is prohibited, the arbitration circuit 302 sets the signal lines 358 and 359 to “0”. When permitting access, the arbitration circuit 302 sets the signal lines 358 and 359 to "1". The gate 300 is connected to the maintenance device 114 by the signal line 158.
Connected to the channel control adapter 122. The signal line 158 includes signal lines 350, 351, 352. The signal line 350 is an address / data bus, the signal line 352 is a request signal from the maintenance device 114, and the signal line 3
Reference numeral 51 is a recognition signal for the request from the maintenance device 114. The gate 301 is connected to the access control circuit 123 of the system control device 115 by a signal line 153.
The signal line 153 is composed of signal lines 353, 354 and 355. The signal line 355 is an address / data bus, the signal line 354 is a request signal from the system controller 115, and the signal line 353 is a recognition signal for a request from the system controller 115. Normally, an input / output request is made via the gate 301, and the gate 300 is the maintenance device 1.
Used only when communicating from 14.

The input / output request processing circuit 303 queues the input / output processing request from the system controller 115,
When performing an input / output operation, the channel 119 is activated and processed.

The channel address storage register 305 is
The address of the channel 119-5 used when communication is performed by the maintenance device 114 is stored. The device address storage register 306 stores the communication control device address connected to the channel 119-5 used when communication is performed by the maintenance device 114.

FIG. 4 shows the internal structure of the channel 119. The channel 119 includes a control register 400, a device address register 401, a data counter 402, a data buffer 403, an input / output control circuit 404 and an adapter 4.
It is configured by including 05.

FIG. 5 shows the details of the control register 400. The control register 400 is for controlling the operation of the channel, and is composed of an 8-bit control flag. 0th bit channel activation flag (Star CHanel flag:
SCH) 501 is set to "1",
The I / O control circuit 404 is activated to operate the I / O of the channel 119.
/ O operation is started. The 1st bit I / O interruption flag (Interrupt CHannel flag: ICH) 502 is “1”.
Is set to I for channel 119.
/ O Stop operation. The I / O interruption flag (IDV) 503 of the second bit is “1”.
Is set to stop the I / O operation for the I / O controller connected to the channel 119.
3rd bit channel reset flag (Reset CHanel
The flag: RCH) 504 resets the channel 119 by being set to "1". 4th bit CHanel Status flag (CHS) 50
5 is set to "1", so that channel 11
Returns the current state of 9. The fifth bit and the sixth bit are unused. 7th bit I / O operation completion flag (I / O
Complete flag: IOC) 508 is set to “1” when the input / output operation on the channel 119 is completed.

Returning to FIG. 4, the device address storage register 4
01 sets the address of the device connected to the channel 119. The data counter 402 counts the number of input / output data. The data buffer 403 stores input / output data. The input / output control circuit 404 performs input / output operation according to an instruction from the control register 400.

To activate the channel 119, the address of the device for input / output is set to the device address register 40.
1 and sets the data structure shown in FIG.
To the channel activation flag 50 of the control register 400.
Set 1 to "1".

As shown in FIG. 6, the architecture defines a data structure in which the channel status word 601 is provided at the address 100 and the channel command address 602 is provided as the fixed address at the address 108. The channel state word 601 includes the channel state flag 505 of the control register 400 set to “1” and the channel state 601.
The state of the channel 119 is set when the I / O operation is completed. In the channel command address 602, the address storing the command for the channel 119 is set. In FIG. 6, the address 2000 in which the channel command 603 is stored is set. In the data address 604 stored immediately after the channel command 603, the address of the data storage area 605 in which the data output from the channel 119 and the data input from the channel 119 are stored is set. In FIG. 6, 40
Address 00 is set.

FIG. 7 shows an operation procedure when the channel 119-5 is activated. When the channel 119-5 is activated, it is checked whether the device set in the device address register 401 is in an operable state (step 70).
1). Next, the channel command address 602 set at the address 108 of the main memory 112 is acquired (step 702). Next, the channel command 603 is acquired (step 703). Then channel command 60
3 via the channel cable 155 to the communication control device 10
2 (step 704). Accordingly, the communication control device 102 communicates with the remote monitoring system 101 via the line 156 (step 705). In this communication, the data storage area 605 of the main storage device 112
And data transfer between the channel 119-5 and the data buffer 403 of the channel 119-5. When the input / output operation ends (step 706), the status of the input / output operation is changed to the channel status word
It is stored in the main memory 112 at the address 100 (step 708). At this time, an input / output interrupt is generated and the end of the input / output operation is reported to the input / output control circuit 118.

As described above, in the case of normal input / output operation, the main memory 112 is used as the channel command 603 and the data storage area 605. The input / output request processing circuit 303 in the input / output control circuit 118 of the input / output processing device 113 sets the setting of the device address register 401 and the instruction to start the device according to the instruction of the instruction processing device 111. FIG. 8 is a flowchart of the operation of the channel control unit 206 of the remote monitoring function program 205. The data structure shown in FIG. 6 in advance is the memory 202 in the maintenance device 114.
However, the address of the data storage area 605 is stored in the data address 604 (step 80).
1). Next, the storage address of the channel command 603 is stored in the channel command address 602 (step 802). Next, the address of the communication control device 102 to be used is set in the device address storage register 306 in the input / output processing device 113 via the channel control adapter 122 (step 803). At this time, the channel control adapter 122 outputs an access request to the input / output control circuit 118 of the input / output processing device 113 via the signal line 158. After receiving the response to this access request, the address of the channel 119-5 to be used is set in the channel address storage register 305 (step 80).
4). This access procedure is generally performed when accessing input / output control circuit 118 and the internal register of channel 119-5. Next, the address of the communication control device 102 is set in the device address register 401 inside the channel 119-5 of the input / output processing device 113 via the channel control adapter 122 (step 805). Next, the channel activation flag 501 in the control register 400
Is set to "1" to activate the channel 119-5 (step 806). Normally, the end of the input / output operation is detected by an interrupt, but since this interrupt signal is not reported to the maintenance device 114, the I / O in the control register 400 is
The O completion flag 508 is checked, it is confirmed that it is set to "1", the end of the input / output operation is detected, and the reception process is ended (step 807).

Next, returning to FIG. 3, the operation of the input / output processing device 113 when communication is performed by the maintenance device 114 will be described. When the input / output processing device 113 is accessed by the maintenance device 114, an access request is issued from the maintenance device 114 via the signal line 352 in the signal line 158. In response to this, the arbitration circuit 302 causes the signal line 35 to
9 is set to "0" to prohibit access to the gate 301. In addition, the signal line 358 is set to “1” to set the gate 300
Is the access permission. Further, the confirmation signal is returned to the maintenance device 114 via the signal line 351. After that, the maintenance device 114 causes the input / output control circuit 118 and the channel 11 to operate.
9 internal registers are accessed.

For example, in the case of access based on a transmission / reception request by the remote monitoring function program 205, first, the address of the communication control device 102 and the address of the channel 119-5 are passed through the gate 300 and the device address storage register 306. And channel address storage register 305
And respectively (steps 803, 80 in FIG. 8).
4). These two pieces of information declare that the maintenance device 114 communicates with the input / output request processing circuit 303 in the input / output control circuit 118. As a result, the input / output request processing circuit 303 controls the arbitration circuit 302 by the signal line 357, and while the remote monitoring function program 205 is operating in the maintenance device 114, the communication control device 10
The input data from 2 is transmitted to the maintenance device 114 via the gate 300. Next, the channel 119-5 is activated (step 806 in FIG. 8). The activated input / output control circuit 404 in the channel 119-5 attempts to acquire the channel command address 602 of the data structure shown in FIG.
However, since the gate 301 is prohibited, the memory 202 in the maintenance device 114 is accessed via the gate 300. Then, the input / output control circuit 404 acquires the channel command 603 (step 703 in FIG. 7) and sends it to the communication control device 102 (step 704 in FIG. 7). Here, in the case of data reception, the input / output control circuit 404 temporarily stores the data sent from the communication control device 102 in the data buffer 403, and stores the data in the data storage area 604 of the memory 202, for example, every 1024 bytes. Transfer (because the gate 301 is prohibited, transfer to the memory 202 via the gate 300). In the case of data transmission, the data storage area 60
The data of No. 4 is transferred to the data buffer 403, the channel command 602 is input to the communication control device 102, and the data in the data buffer 403 is transmitted (step 705 in FIG. 7).

FIG. 12 shows the data structure of a data packet used in communication between the computer system 100 and the remote monitoring system 101. This data packet 1200
It is composed of a transmission packet ID (PID) 1201, a packet size (PSZ) 1202, a transmission time (STM) 1203, a transmission source machine ID (ID) 1204, and a transmission parameter (SPRM) 1205. The transmission packet ID 1201 is composed of 4 bytes, and is normally "1" to "42949" in order to specify the communication packet 1200.
A unique value of "67296 (256 to the fourth power)" is set. When used in the remote monitoring function program 205, "0" which is not used in normal communication is used to distinguish from normal communication.

The packet size 1202 is composed of 2 bytes and indicates the size of the transmission packet 1200. The transmission time 1203 is set by expressing the time with a 6-digit BCD code when the packet 1200 is transmitted. The transmission source machine ID 1204 is set with the ID of the computer system 100 set in advance when performing remote monitoring. The transmission parameter 1205 includes the remote monitoring system 1
The operation instruction from 01 and the state of the computer system 100 are set.

FIG. 9 shows a processing procedure of the remote monitoring function program 205. First, the transmission process 1000 shown in FIG.
(Details will be described later) is called, and the remote monitoring system 10
"Emergency communication start" is transmitted to 1 (step 901).
Next, the message output to the console display 126 at that time is transmitted as information for investigating the location of the failure in the computer system 100 and its cause (step 902). Specifically, the data stored in the screen buffer 213 on the memory 202 is transferred.
Next, the reception process 1100 (details will be described later) shown in FIG. 11 is called, and an operation request command from the remote monitoring system 101 is waited for (step 903). When the operation request command is received from the remote monitoring system 101, the operation request command is stored in the command input area of the screen buffer 213 (step 904). Next, the maintenance function program 209 is called to execute the operation request command (step 905). Next, the transmission process 10 of FIG.
00, and the data in the screen buffer 213 obtained as a result of executing the operation request command is transmitted to the remote monitoring system 101 (step 906). Next, it is checked whether the state of the computer system 100 has recovered (step 907), and if not recovered, the process returns to step 903. When recovered, channel address storage register 305 and device address storage register 306
Are initialized and the remote monitoring function is terminated (step 90).
8).

FIG. 10 shows a procedure of transmission processing in the transmission processing section 211. First, the memory 202 in the maintenance device 114
The area of the transmission packet 1200 is secured above (step 1001). Next, "0" is set to the transmission packet ID 1201 (step 1002). Next, the transmission parameter 1205 is set (step 1003). Next, the transmission parameter 1205 size + 10 bytes is set to the packet size 1202 (step 100
4). Next, "transmission request" is set in the channel command 603 (step 1005). Next, the time at that time is set as the transmission time 1203 (step 1006). Finally, the channel activation process 800 of FIG. 8 is called (step 1007).

FIG. 11 shows the procedure of reception processing in the reception processing section 212. First, the packet 120 is stored in the memory 202.
The area of 0 is secured (step 1101). Next, "receive request" is set in the channel command 603 (step 1102). Next, the channel activation process 800 of FIG. 8 is called (step 1103). As a result, the data is stored in the area secured in step 1101 in the format shown in FIG. Finally, the transmission parameter 1205 is extracted (step 1204).

As can be understood from the above description, according to this remote computer management system 1, even if the remote monitoring agent program 124 running on the OS 116 cannot function due to a failure, the maintenance device 11
Communication control device 1 used in normal business by using 4
02 and the communication line 156, the remote monitoring system 10
1 can be communicated with to implement monitoring / operation from a remote location.

Second Embodiment In the second embodiment, the maintenance device activates the input / output processing device via the system control device, controls the communication control device, and communicates with the remote monitoring system. It is an embodiment for realizing monitoring / operation from the ground.

FIG. 13 is an overall configuration diagram of the remote computer management system 2 according to the second embodiment of the present invention. The remote computer management system 2 remotely monitors / operates the computer system 1300 by the remote monitoring system 101 via the communication control device 102.

The computer system 1300 includes an instruction processing device 111, a main storage device 112, an input / output processing device 1301,
The maintenance device 1302 and the system control device 115 are provided. The instruction processing device 111, the main storage device 112, and the system control device 115 are the same as the components described in FIG. However, the main storage device 112
A work area for emergency communication 1305 is secured in FIG.
The data structure 600 is set. That is, the channel status word 601 and the channel command address 602 are secured by the system at fixed addresses determined by the architecture, but the channel command 603, the data address 604, and the data storage area 605 are input / output at each input / output processing. Since it is necessary to set, a work area 1305 for emergency communication is secured on the main storage device 112, and communication work parameters (603, 604, 604) are stored in the work area 1305 for emergency communication.
605) is set. The input / output processing device 1301 includes channels 119-0 to 119-7 and an input / output request processing circuit 303. Maintenance device 130
2 is a device access circuit 1304 and a channel (CH)
And a connection adapter 121.

FIG. 14 shows a detailed structure of the maintenance device 1302. The maintenance device 1302 includes a CPU 200, a system access circuit 201, an input / output control circuit 204, a memory 202, a console control circuit 207, and a channel (CH) connection adapter 121. Each component is the same as the component described in FIG. The configuration different from FIG. 2 is that the channel control circuit 203
And there is no channel control adapter 122.

FIG. 15 shows a channel starting procedure by the maintenance device 1302. First, the data structure 6 set in the emergency communication work area 1305 on the main memory 112.
The address of the data storage area 605 in 00 is set to the data address 604 (step 1501). Next, the channel command 603 in the data structure 600
The storage address of is stored in the channel command address 602 (step 1502). Next, the communication control device 10
The second address is set in the device address register 401 in the channel 119-5 (step 1504). next,
The channel activation flag 501 of the control register 400 is set to "1" to activate the channel 119-5 (step 1505). Finally, the I / O completion flag 508 in the control register 400 is checked, it is confirmed that it is set to "1", the end of the input / output operation is detected, and the reception processing is ended (step 1505).

The processing procedure of the remote monitoring function program 205 is shown in FIG.

FIG. 16 shows a procedure of transmission processing in the transmission processing section 1401. First, the area of the transmission packet 1200 is secured in the main memory 112 (step 160).
1). Next, "0" is set to the transmission packet ID 1201 (step 1602). Next, the transmission parameter 12
05 is set (step 1603). Next, the size of the transmission parameter 1205 + 10 bytes is set to the packet size 1202 (step 1604). Next, "transmission request" is set in the channel command 603 (step 1005). Next, the time at that time is set to the transmission time 1203.
(Step 1606). Finally, the channel activation processing 1500 of FIG. 15 is called (step 160).
7).

FIG. 17 shows the procedure of reception processing in the reception processing section 1402. First, the area of the packet 1200 is secured on the main memory 112 (step 1701). Next, "receive request" is set in the channel command 603 (step 1702). Next, the channel activation processing 1500 of FIG. 15 is called (step 1703). As a result, the data is stored in the area secured in step 1701. Finally, the transmission parameter 1205 is extracted (step 1704).

As can be understood from the above description, according to the remote computer management system 2, the maintenance device 1302 is used even when the remote monitoring agent program running on the OS 116 cannot function due to a failure. Then, the communication control device 102 used in the normal business
It is possible to realize monitoring / operation from a remote location by communicating with the remote monitoring system 101 using the communication line 156 or the communication line 156.

Comparing the second embodiment with the first embodiment, the second embodiment uses all devices other than the instruction processing unit 111, and is inferior to the first embodiment in terms of fault tolerance. However, the channel control adapter 122 in the first embodiment,
Since the channel control circuit 203, the gate 300, etc. are not required, it is excellent in that it can be easily applied to a system already shipped.

[0058]

According to the remote monitoring method of the computer system and the remote computer management system of the present invention, it is possible to perform communication by utilizing the communication control device and the communication line used in the normal business even when there is a failure. This makes it possible to monitor / operate from a remote place in the event of a failure. Further, since it is not necessary to add a new device to the computer system or lay a new line, an extra burden is not imposed on the user.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a remote computer management system according to a first embodiment of the present invention.

FIG. 2 is a detailed configuration diagram of a maintenance device.

FIG. 3 is a detailed configuration diagram of an input / output processing device.

FIG. 4 is an internal configuration diagram of a channel.

FIG. 5 is a configuration diagram of a control register in a channel.

FIG. 6 is a data format diagram for controlling a channel.

FIG. 7 is a flowchart showing an operation procedure of a channel after being activated.

FIG. 8 is a flowchart showing a procedure in which the maintenance device activates a channel to perform input / output.

FIG. 9 is a flowchart of a remote monitoring function program executed by the maintenance device.

FIG. 10 is a flowchart of a processing procedure of a transmission processing unit of a remote monitoring function program.

FIG. 11 is a flowchart of a processing procedure of a reception processing unit of the remote monitoring function program.

FIG. 12 is a structural diagram of a data packet.

FIG. 13 is an overall configuration diagram of a remote computer management system according to a second embodiment of the present invention.

FIG. 14 is a detailed configuration diagram of a maintenance device.

FIG. 15 is a flowchart of a procedure in which the maintenance device activates a channel and performs input / output.

FIG. 16 is a flowchart showing a processing procedure in a transmission processing unit of the remote monitoring program.

FIG. 17 is a flowchart showing a processing procedure in a reception processing unit of the remote monitoring program.

[Explanation of symbols]

1, 2 ... Remote computer management system 100, 1300 ... Computer system 101 ... Remote monitoring system 102 ... Communication control device 156 ... Communication line 111 ... Command processing device 112 ... Main storage device 113, 1301 ... Input / output processing device 114, 130
2 ... Maintenance device 117 ... Communication management program 118 ... Input / output control circuit 119-0 to 7 ... Channel (CH) 120, 1304 ... Device access circuit 121 ... Channel connection adapter 122 ... Channel control adapter 123 ... Access control circuit 124 ... Remote Monitoring agent program 200 ... CPU 201 ... System access circuit 202 ... Memory 203 ... Channel control circuit 204 ... Input / output control circuit 205 ... Remote monitoring function program 209 ... Maintenance function program 210 ... Console function program

Claims (7)

[Claims] 1. A computer system including an instruction processing device, an input / output processing device, and a maintenance device, a communication control device connected to the input / output processing device, and the computer system via the communication control device and a communication line. In a remote computer management system comprising a remote monitoring system connected to the remote computer, when the computer system is normal, by executing the remote monitoring agent program on the command processing device,
Communication between the computer system and the remote monitoring system is performed by using the input / output processing device, the communication control device, and the communication line, and the computer system is remotely monitored by the remote monitoring system, and the computer system has failed. In this case, by executing the remote monitoring function program on the maintenance device, communication between the computer system and the remote monitoring system is performed using the input / output processing device, the communication control device and the communication line, A remote monitoring method for a computer system, characterized in that the system is remotely monitored by a remote monitoring system. 2. The computer system remote monitoring method according to claim 1, wherein the maintenance device executes a remote monitoring function program to communicate with the remote monitoring system,
A remote monitoring method for a computer system, wherein a maintenance function program is executed by a maintenance device in response to an operation request from the remote monitoring system to recover from the failure. 3. A computer system comprising an instruction processing device, a main memory device, an input / output processing device, a maintenance device, and a system control device for connecting the respective devices, and a communication control device connected to the input / output processing device. A remote computer management system comprising a remote monitoring system connected to the computer system via the communication control device and a communication line, wherein the data input from the communication control device to the input / output processing device is The instruction processing device sends data, which is sent from the input / output processing device to the instruction processing device or the main storage device via the system control device and is output from the input / output processing device to the communication control device, via the system control device. Or a normal transfer mode for sending from the main storage device to the input / output processing device, or the input / output from the communication control device The data input to the processing device is sent from the input / output processing device to the maintenance device via a signal path that does not pass through the system control device, and the data output from the input / output processing device to the communication control device is controlled by the system control. Data transfer mode switching means for switching to any one of the transfer modes at the time of failure sent from the maintenance device to the input / output processing device via a signal path that does not pass through the device, and executed by the command processing device when the computer system is normal By using the input / output processing device, the communication control device, and the communication line, a remote monitoring agent program for performing communication between the computer system and the remote monitoring system and remotely monitoring the computer system by the remote monitoring system And by being executed by the maintenance device when the computer system fails A remote monitoring function program for performing communication between a computer system and a remote monitoring system by using the input / output processing device, the communication control device, and the communication line, and remotely monitoring the computer system by the remote monitoring system is provided. A remote computer management system characterized in that 4. A computer system comprising an instruction processing device, a main memory device, an input / output processing device, a maintenance device, and a system control device for connecting the respective devices, and a communication control device connected to the input / output processing device. A remote computer management system comprising a remote monitoring system connected to the computer system via the communication control device and a communication line, wherein the data input from the communication control device to the input / output processing device is The instruction processing device sends data, which is sent from the input / output processing device to the instruction processing device or the main storage device via the system control device and is output from the input / output processing device to the communication control device, via the system control device. Or a normal transfer mode for sending from the main storage device to the input / output processing device, or the input / output from the communication control device The data input to the processing device is sent from the input / output processing device to the maintenance device or the main storage device via the system control device, and the data output from the input / output processing device to the communication control device is controlled by the system control device. Data transfer mode switching means for switching to either the transfer mode at the time of failure sent from the maintenance device or the main storage device to the input / output processing device via a device, and the command processing device when the computer system is normal By using the input / output processing device, the communication control device, and the communication line, a remote monitoring agent program for performing communication between the computer system and the remote monitoring system and remotely monitoring the computer system by the remote monitoring system And when the computer system fails, it is executed by the maintenance device. A remote monitoring function program for performing communication between the computer system and the remote monitoring system by using the input / output processing device, the communication control device, and the communication line, and remotely monitoring the computer system by the remote monitoring system. A remote computer management system characterized by having. 5. The remote computer management system according to claim 3 or 4, wherein the remote monitoring function program performs maintenance performed by the maintenance device when an operation request is issued from the remote monitoring system through communication with the remote monitoring system. A remote computer management system having a function of executing a functional program. 6. The remote computer management system according to any one of claims 3 to 5, wherein the maintenance device has a storage area for storing data related to communication with the remote monitoring system. Management system. 7. The remote computer management system according to claim 3, wherein the main storage device has a storage area for storing data relating to communication with the remote monitoring system. Computer management system.